Old Mar 23, 2010 | 08:24 PM
  #28  
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hicost
Cosworth 7
 
Joined: Aug 2006
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From: West Sussex
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Originally Posted by MadRod
Mark had the Hart cleaned up by his head man as its a bit rough as supplied. On the same engine Spec it made 47bhp more than an RS500 plenum which had obviously reached its limits. Certainly the equal of the MIS at these levels in fact i believe it made its Power with lower boost than Daves when on the same Turbo.
As Rod said, I did some back to back testing on Joe’s dyno with the Hart unit before they were sold; I saw the near exact gain in BHP against a Swedish plenum.

I am running a ported head with Siemens and a T38 + a few other bits and I am putting out around 470bhp and boosting to 30psi. The throttle response is much better also.
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